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- Title
Linearity of the electromechanical penile plethysmograph's output at large expansions.
- Authors
Richards, Jeffrey C.; Kalucy, Ross S.; Wood, Michael M.; Marshall, Villis R.
- Abstract
Despite the widespread use of the Barlow-type electromechanical plethysmograph for monitoring changes in penile circumference, doubts have arisen about its sensitivity at large expansions. This study investigated the linearity of both a used and unused gauge over a wide range of standardized expansions. For both gauges, the relationship between electrical output and physical expansion was almost linear. A logarithm mic 10 transformation on the physical expansion data did not for either gauge achieve perfect linearity. Contrary to suggestions in the literature, therefore, such a transformation is not required when using this gauge.
- Subjects
PLETHYSMOGRAPHY; BLOOD circulation; TISSUE expansion; PENIS; LITERATURE; LOGARITHMS
- Publication
Journal of Sex Research, 1990, Vol 27, Issue 2, p283
- ISSN
0022-4499
- Publication type
Academic Journal
- DOI
10.1080/00224499009551557